NHTSA Complaint #11486225 — 2020 TESLA MODEL Y

I reported many instances of what is know as "phantom braking" when using Adaptive Cruise Control when we went on our first long drives in the car when we took delivery. They recalibrated the front sensing cameras and that helped. It did not eliminate all events, but ACC was then usable in certain driving situations, i.e., when not in fast congested traffic as in metropolitan traffic. We took a long trip on freeway and two lane highways a month ago, about 3,500 miles, which had a few, non serious events. about a month or so ago, Tesla had a software update that said it was going to install "Tesla Vision", a camera only senor system, elimination the radar sensing our car has. The result was having quite a few more events of PB. One particular one was on a freeway (I8) heading east at 75 mph with no traffic visible neither in front of or behind our car. It slammed on, hard, the brakes and would have brought us to a complete stop had I not applied power. I reported the high number of PB events to Tesla Service, to which they replied, in essence, that ACC is a Beta feature and you just need to pay close attention when using it and it's not perfect. Well, its not close to reliable and is capable of causing major accidents. We avoided several because I always have my foot near the accelerator in case the car decides to stop. Tesla said that they could find no hardware faults in our car, but I suspect it is software, not hardware. I will happily join a class action suit. I will put the day the last one happened below.